Life After PeopleWhat would happen to planet earth if the human race were to suddenly disappear forever, wiped out by a plaque of the undead? Would ecosystems thrive? What remnants of our industrialized world would survive? What would crumble fastest? We have wondered this ourselves. However, as the History channel will tell us tonight, from the ruins of ancient civilizations to present day cities devastated by natural disasters, history gives us clues to these questions and many more.  While sadly ignoring the effect of a massive zombie outbreak on the living world, the History channel does explore what our world might be like though their special “Life After People“, which airs January 21st, 2008 at 9pm EST.